Scientists are warning that ________ emissions of carbon (碳排放) are cut, we could be heading for an environmental disaster.
#30282
A
before
B
as
C
unless
D
in case
推荐题目
He was told that it would be at least three more months _____ he could recover and return to work.
#30355
A
when
B
since
C
before
D
that
It was for a lifetime of unselfish work among the sick natives ______ the old doctor deserved to be honored.
#33380
A
who
B
that
C
which
D
whom
Words don’t have the power to hurt you, _______ the person who said them means a lot to you.
#30903
A
if
B
unless
C
until
D
whether
________ good use you have made of your time to work, there is still some room for improvement.
#33762
A
Whatever
B
However
C
Though
D
Whether
The cousins are alike in age, but _____ they are as different as day and night.
#34782
A
anyhow
B
besides
C
otherwise
D
moreover